There is a solution posted at that topic, Why is it not a solution ? Did you even look at it ?

You don't even mention what version of Debian you are using, nor the version of Gnome, Nothing to go on, nobody is going to be able to answer this , like it is. Besides that, it is a Gnome issue, and would be better to ask them, for all I knowit is another "new feature" the Gnome developers added, and there is no way to create any short cuts on Gnome Classic any more.

Sorry, I'm not sure it's the same a launcher than a "shortcut"...I use Debian GNU/Linux 9 (stretch) 64-bit with Gnome Classic 3.22.2 version.I just managed to create the recycle bin launcher at desktop (